Table 3.

Blood pressure values and orthostatic intolerance symptoms for inpatients with a successful continuous measurement

Blood pressure characteristics	Value (n = 20)
Supine SBP, mean (SD), mm Hg	141.2 (25.5)
Supine DBP, mean (SD), mm Hg	75.0 (14.8)
Supine HR, mean (SD), bpm	74.0 (11.0)
Prevalence of IOH and COH
IOH, n	8
IOH in an active stand (n = 15), n	6
IOH in passive sitting (n = 5), n	2
IOH (n = 8) + COH, n	6
COH, n	12
COH in an active stand (n = 15), n	8
COH in passive sitting (n = 5), n	4
COH (n = 12) + IOH, n	6
Orthostatic blood pressure and HR responses in patients with IOH
SBP drop magnitude, 0–15 s, mean (SD), mm Hg	65.9 (15.8)
DBP drop magnitude, 0–15 s, mean (SD), mm Hg	28.3 (11.7)
HR increase 0–15 s in 1/s, median (IQR)	28.2 [26.3–55.3]
Orthostatic blood pressure and HR responses in patients without IOH
SBP drop magnitude, 0–15 s, mean (SD), mm Hg	16.0 (13.2)
DBP drop magnitude, 0–15 s, mean (SD), mm Hg	11.7 (12.6)
HR increase 0–15 s in 1/s, median (IQR])	28.3 [19.7–40.7]
Symptoms of orthostatic intolerance in patients with IOH (n = 8) Positive symptom(s), n	4
Symptoms of orthostatic intolerance in patients without IOH (n = 12) Positive symptoms(s), n	7

IOH = a drop of ≥40 mm Hg SBP and/or ≥20 mm Hg DBP, within 15 s after active standing or passive sitting. COH = a decrease of ≥20 mm Hg SBP and ≥10 mm Hg during 15–180 s after active standing or sitting. SBP, drop magnitude = difference between baseline SBP and the lowest measured SBP value in the standing/sitting intervals at 0–15, 15–60, and 60–180 s. Positive symptom(s) is defined as reporting one or more of the following: light-headedness, blurred vision, dizziness, nausea, or pain.